Fried Fish with Puerto Rican Sauce(Mojo Isle

Mojo isleño is the signature sauce of Salinas on Puerto Rico’s southern coast, a slow-cooked tumble of sliced onions, green olives, capers, bay leaves, and tomato that gets ladled hot over crisp-edged fried fish. It is Puerto Rican coastal cooking at its most generous.

The sauce needs a full hour at moderate heat. Two and a half pounds of onions cook down slowly into a sweet, jammy base, with olives and capers providing briny counterpoint and vinegar cutting through the richness. Do not rush it, short-simmered versions taste sharp rather than balanced.

The fish technique is classic island: brown whole garlic cloves in olive oil, remove them so they do not burn, then fry inch-thick slices of white-meat fish (snapper, grouper, and sea bass are traditional) until the flesh flakes. Moderate heat first for color, then low heat for 15 minutes of gentle cooking.

The magic move is the five-minute rest. Stacked in a mold and smothered in hot sauce, the fish drinks in the briny-sweet flavors without going mushy.

Pro Tips

• Chill the fish slices before dredging, cold flesh holds together better in hot oil.
• Dust fish lightly with flour, thick coating turns gummy under the wet sauce.
• Use the garlic-infused oil for frying, it adds another layer of flavor.
• Serve with white rice and tostones to soak up every last spoonful of sauce.

Variations

• Use red snapper whole for the most authentic island presentation.
• Add a pinch of oregano and sliced pimientos for more color.
• Swap white vinegar for sherry vinegar for a tawny depth.